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Context :

I have a WebSocket server program (.exe build with C#) and i want to test my request with a NodeJs client (in production mode, it will be NodeJs client app which going to use the "API") I use jest to test it

My test code :

const WebSocket = require('ws');

test('Extension Connection test', async ()=>{
    var ws = new WebSocket("ws://127.0.0.1:2031/Extension");

    await new Promise((resolve, reject)=>{
        ws.onmessage = function (message) {
            var responseAttended = {"type":"Information","data":{"information":"Success connection as Extension"},"target":"Extension"};
            assert(message.data, responseAttended);
            resolve();
        };

        ws.onopen = function () {
            var request = {target: "ExtensionService", type: "Auth", data: {name: "extension"}};
            ws.send(JSON.stringify(request));
        };

        ws.onerror = function () {
            assert(false);
            reject();
        }
    });
});

I started my server before launch test, my server catch the value send (so websocket is connected). My server did some stuff and send back the response, but it's looks like this one never arrived in my NodeJs test client

enter image description here

As no response arrived, the promise is not resolved and after 5s the jest timeout stop the test.

Any idea what i made bad ?

enter image description here

skyboyer
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JustinMartinDev
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  • Maybe this could be of help -> https://stackoverflow.com/questions/15509231/unit-testing-node-js-and-websockets-socket-io – eol Mar 18 '20 at 16:14

1 Answers1

0

I think you can use jest.setTimeout(millisecond) before use test(), it work for me

jest.setTimeout(10000);
test('Extension Connection test', async () => {
    // TODO your code
})
Tyler2P
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Yu Chan Huang
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